1GB DDR 400MHz Acer compatible RAM memory DIMM This upgrade is compatible with models. Warranty on this product is Lifetime: Which means if it does not work, for any reason, we will replace it. Noexceptions. Product ships with an installation guide. Outlines everything you need for an upgrade. Technical specifications: Capacity: 4 GB Module or Kit: Module RAM Type: DDR Pins: 184 PIN Clock Speed: 400MHz Data rate: PC3200 CAS: 3.0 Voltage: 2.6 ECC: ECC Registered or Buffered: unBuffered Warranty: Lifetime... show more